SU1551445A1 - Arrangement for making roll-formed sections - Google Patents

Abstract

The invention relates to a pressure treatment, in particular, to equipment for the production of bent profiles from a roll tape. The purpose of the invention is to improve the accuracy and quality of manufactured products. From the unwinding device, the tape is fed into the step feed mechanism, then to the press for punching holes and forming the elements of the product in the tape. The profile is molded in a profile bending mill and cut into dimensional workpieces in a cutting mechanism. The cutting mechanism includes a drive carriage 12 with a drive. In the guides 16 of the drive carriage, an additional non-drive carriage 17 is mounted. The carriages are interconnected by a connecting spring 19. A cutting unit 20 containing a slider 27 with a cutting knife 28 is placed on a non-driving carriage 17. In the side racks 21 of the cutting unit and the rolling pin 24, grooves are made, which are installed two catchers 31. Catchers are pivotally connected with levers 32 pivotally connected with side racks. The levers are fixed to the rollers 24, which interact with the rulers 35. The movement of the drive carriage during operation is advanced with respect to the movement of the non-drive carriage. The moving speed of the non-driving carriage is equal to the speed of the profiling. As a result of the difference in the speeds of movement of the carriages, the profile that leaves the last stand of the mill is tensioned, which prevents its deformation from loss of stability. 3 il.

Description

The invention relates to the processing of metals by pressure, in particular d devices for the manufacture of profi- jneft from roll tape.

The purpose of the invention is to improve the accuracy and quality of manufactured products.

Figure 1 shows a device for making curved profiles, a general, view; figure 2 - section aa in figure 1; on fig.Z - view B in figure 2.

The device contains successively installed unwinding device 1 for installing a roll of tape 2, having a mechanism 3 straightening tape 2, a mechanism 4 feeding the tape at a predetermined pitch, a press b with a die 6 for punching holes and molding elements of the product in the tape 2, loopback compensator 7 for creating a stock tape 2 before profiling, roll forming mill 8 and the mechanism 9 pieces of dimensional blanks.

The cut-off mechanism 9 consists of a frame 10 (FIGS. 2 and 3), in horizontal guides 11 of which the main carriage 12 is mounted on rollers 13. The main carriage 12 is connected with the stem 14 of the pneumatic actuator 15 of reciprocating movement along horizontal guides 11 beds 10

In the guides 16 of the main carriage 12, an additional non-drive carriage 17 on the rollers 18 is additionally mounted. Both carriages 12 and 17 are interconnected by a connecting spring 19, which in statics determines the initial position not 5

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a drive carriage 17 with respect to the guides 16 of the main carriage 12.

On a non-driving carriage 17, a cutting unit 20 is fixed, comprising a frame in the form of two side posts 21 and an upper crosshead 22 with a piston drive 23, two rolling pins 24 mounted in the bottom 25 and upper 26 plates. The rolling pin 27 is mounted on rolling pins 24 with a cutting edge 27 connected with piston rod 29 of piston drive 23.

A matrix 30 is mounted on the bottom plate 25. In the side racks 21 and the rolling pins 24 there are slots in which two are installed. catcher 31, hingedly connected with levers 32, which are mounted on racks 21 by means of hinges 33.

On the arms 32, the rollers 34 are movably secured in contact with guide bars 35 mounted fixedly on the frame 10. The free ends of the arms 32 are connected by springs 36 with brackets 37 fixed on the upper yoke 22.

The thickness of the catchers 31 corresponds to the width of the grooves made in the places of sections of the manufactured profile 38 on the punch 6 for punching holes and forming the elements of the product in the tape 2 of the press 5.

The process of making dimensional profile blanks is described as follows.

The tape roll is mounted on the unwinding device 1. The end of the tape is passed through the rolls of the prank mechanism 3 and the tape feed mechanism 4 at a predetermined step into the punch 6. Turning on the press drive 5, the holes are punched and the product elements are unwound in the tape 2. Subsequently, unwinding the tape 2 and its pitch feed, as well as the punching process, take place automatically.

Turning on the drive of the roll forming mill 8, pass the end of the tape 2 through the loop compensator 7 and feed it into the rolls of the roll forming mill 8.

Emergency circuit breakers of the loopback compensator 7 turn off the tape feed mechanism 4 at a predetermined step with an excessive increase in the tape stock.

The profile 38, obtained in the rolls of the roll forming mill 8, moves continuously and, encountering the catchers 31 of the cutting assembly 20 of the mechanism 9, cuts sections, sets in motion the non-driving carriage 17 from the starting position along the guides 16 of the carriage 12, stretching the connecting spring 19.

At the beginning of the movement of the non-driving carriage 17, a command from a sensor (not shown) is activated to activate the pneumatic actuator 15 for reciprocating movement and the piston drive 23, the slide 27 with a cutting knife 28. The main carriage 12 moves the pneumatic actuator rod 15 ahead of the non-driving carriage 17, moving at a speed of profiling.

At the moment when the section of reduced rigidity of the manufactured section 38 comes out of the last stand of the roll forming mill 8 by means of grooves cut at the places, the pneumatic actuator 15 of the reciprocating alternation provides movement of the main 12 and non-driven 17 carriages, thus preventing the manufactured profile 38 its deformation from buckling.

When moving the cutting unit 20, the levers 32, in contact with the fixed guide rulers 35 by means of the rollers 34, rotate around the arnirs 33, output the catchers 31, and the main 12 and non-driven 17 carriages by the non-actuator 15 of the reciprocating movement return to a similar position. springs

36, using levers 32, press the catchers 31 to the side surfaces of the moving manufactured profile 38.

before interacting with the grooves, as a result of which the catchers 31 go into the grooves of the manufactured profile 38. As the manufactured profile 38 moves continuously, it again takes place

moving the main 12 and non-driving carriage 17, in the previously described sequence, automatically turning on the piston actuator 23, the rod 29 of which moves the slider 27 with a cutting knife 28, which, when interacting with the matrix 30, cuts the dimensional workpiece of the manufactured profile 38.

When switching the piston actuator 23, the slider 27 returns to its original position, catchers 31 come out of the grooves, and the pneumatic actuator 15 reciprocatingly moves the main 12 and non-driven 17 carriages to the initial position, with

5 of this non-drive carriage 17, under the influence of the coupling spring 19, occupies the initial extreme position relative to the guides 16 of the main carriage 12.

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Claims (1)

After this cycle repeats, the formula of the invention A device for the manufacture of curved profiles, containing an unwinding device installed along the technological process, a feed mechanism for a given step, a press with a die for punching holes, a loopback compensator, a profile-bending mill and a piece-cutting mechanism for cutting, which includes a drive carriage mounted with the possibility of translational moving along the bed guides, the cutting unit, in the case of which the knife is movable, the safety device and the roller mounted on the levers, the guide ruler, Strictly connected with the bed and mounted with the ability to interact with the roller, characterized in that, in order to improve the accuracy and quality of cutting, the cutting mechanism is equipped with an additional non-rolling drive carriage mounted on the side racks mounted with the possibility of translational movement along the guides mounted on drive carriage, a spring, a connecting carriage, a second lever supporting the safety device and a roller, an additional guide ruler, a cutting unit is placed on a non-driven carriage, the levers are installed symmetrically with respect to the feed axis and are pivotally connected at one end to the side posts, wherein the body is provided with brackets and an elastic element connecting the other end of the arms to the brackets, and catchers are connected with the arms pivotally. 35 MS